#define _CRT_SECURE_NO_WARNINGS
int main() {
    int x = 0;
    int y = 0;
    int x1 = 0;
    int y1 = 0;
    scanf("%d %d", &x, &y);
    scanf("%d %d", &x1, &y1);
    if (y1 - y == 1)
        printf("u");
    else if (y1 - y == -1)
        printf("d");
    else if (x1 - x == 1)
        printf("r");
    else
        printf("l");
    return 0;
}
#include <stdio.h>

int main() {
    int state = 0;
    while (scanf("%d", &state) != EOF) {
        if (state == 200)
            printf("OK\n");
        if (state == 202)
            printf("Accepted\n");
        if (state == 400)
            printf("Bad Request\n");
        if (state == 403)
            printf("Forbidden\n");
        if (state == 404)
            printf("Not Found\n");
        if (state == 500)
            printf("Internal Server Error\n");
        if (state == 502)
            printf("Bad Gateway\n");
    }
    return 0;
}








